peters



@geiten ituts glattnt @frn SAM UBL BARBGUR, OF LISBURN, IRELAND.

Leiters .Puhfnt No. 69,159, dated September 14, 1837; permitain ,Enr/Zaini ilfay I4, 1866.

. IMPROVEMENT IN MAUHINE FOR FINISHING THREAD.

dige Sagunto referat ttrili'tlgese trttws-xitoit mit mating gz-nt nf tip eine.

TO ALL WHOM I'l MAY CONCERN:

Be it known that I, SAMUEL BARoUn, of Lisburn, Ireland, have invented a new and useful Improvement in Machinery for Finishing ySewing-Thread or Yarn; and I do hereby declare that thc following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawings, forming part of this speeieation.

This invention relates to certain improvements upon a machine used for finishing sewing-thread. In the accompanying drawing i Figure I is a front elevation of the machine in its improved forni.

' Figure 2 is a cross-sectional elevation; and

l Figure 3 is un enlarged view of some of the parts.

` The first of these improvements consists in an arrangement of parts whereby the tensional strain put on the hanh of thread oryarn by means of pairs of hooks is made more uniform than heretofore. This is effected by allowing each bottoni hook to approach the corresponding top hook independently of the remaining bottom hooks, for the purpose of accommodating itself` to the unavoidable variations in the lengths of the differenthanlcs without subjecting the banks to undue tensional strain. l

For the purpose of explaining this part ofthe invention,V I would reina-rk that the hanks are shown at a as laid over tensioirpullcys, hereafter more particularly referred to, which pulleys are carricdby short cranked rods or hooks Z1 c, the hoolts b being mounted in a longitudinal raising-bar, d, and the hooks c in bearings in a longitudinal fixed frame, constituting a portion of the main framing 7L of the machine. The bar dis free to move up and down, as will be hereafter described, to permit of the hanls being held at tension at their full length, and to allow for the contraction of their length under the twisting action.7 To the shank of each bottom hook Zi a helical spring, l, is applied, so that, as the hook is lifted by the thread, the spring is compressed until the bottom movable rail el is sustained equally, or nearly so, by cach hunk. The hooks b are prevented from rising so far as to take the spur-wheels b3, which they carry out of gear with each other by means of a collar-plate, 6*, fastened at the end below the spring bl. The tcnsional strain of the hanks may also be equalized by a similar arrangement applied to the top hooks o, or by the use of separate weights applied to either top or bottom hooks, or in any other convenient manner; but I prefer the helical spring at each bottom hook for providing against the vinequalities of strain heretofore experienced.

The second improvement consists in allowing the bottom hooks b to revolve on their axles instead of being fixtures, as at present, and connecting each adjoining pair by toothed wheels b3, which equalize the tension on the hanks.

`The third improvement consists in an arrangement by means of which a motion is given to each hunk of thread in the direction of its length during the finishing process without stopping the machine, (as has been necessary heretofore,) for the purpose of subjecting cach portion to an equal amount of action or finish. This is effected by mounting a pulley, e, (which is free to revolvc,) ou each ofthe hooks b and e to receive the thread, and by communicatingra slight rotary movement to the pulleys on the bottom hooks or studs b at cach descent of the bottom bar rl, to which all the bottom hooks Z1 are attached. This rotary movement is effected by fixing on thc end of cach of the pulleys i: of the lower hooks b a ratchet-wheel, e, (fig. 3,) that isacted upon by a pawl or catch, e2, carried by a plate, ci". The pulley is mounted loosely on a spindle, e4, which has its bearing in the hook b. Keyed to the spindle at one end is the plate 03,; and to the other end of this spindle e4 is fasty cned the weighted lever e, which is lifted by the rope or chain e every time the bottom hooks I) are at their lowest point; and thus the catch c'2 is brought into action, and caused to turn the pulley e partially round. As the hank is at this time hanging without twist, it is carried round a little by the motion of the pulley e on the hook b, and thus each part of the hankfis in turn exposed to an equal amount of the action of twisting.

The last improvement consists in an arrangement for regulating the tension on all the hanks in the machine at one timcso as to facilitate the formation of curls or kinksin the hunks during the twisting process. This is effected by counteracting the weight of the bar d, to which the bottom hooks b are attached, by means of a weight, j, or weights fx and levers f, which arc connected to this bar d, which bar is sustained by the thread at the proper times only, and relieved from it when required. This will be understood on reference to the drawing, iig. 1, where the bottom bar d and its set of hooks b are shown in the lowest position. To each end of this bar d are attached two ropes or chains g g', which are joined together by their ends being attached to their .respective pulleys f2. These pulleysare keyed to short shafts f", which pass through the main framing li at opposite ends of the machine. To these shafts f3 are. fixed the two weighted levers f, which are so set that, when the bottom bar vcl rises s`o far, by the twisting of the hanks a, as tobe ready for the formation of a kink or second twist, the weightsf1 are almost u. eounterbalance,'t he leversf being horizontal. The driving- 'shaft A is connected by pulleys or gear of any suitable kind for receiving the requisite motion transmitted by bevel-gear m tothe upper hooks c.

Having new set forth the naturefof the invention of improvements in machinery for finishing sewingthread or yarn, and explained the manner ot' carrying the sume into eleet` I wish it to'be understood that I clnim- 1. The bottom hooks b, revolving upontheir axles, each adjoining pair connected by toothed wheels b, to equalize the tensional strain on the hnnks, as herein shown and described.

2. The combination of the hooks b, ratchet-wheel el, catch e2, spindle e4, weighted Alever a", and weighted cord e, all operating, as described, to equalize the finish on the thread, as herein set' forth.

3. The weights f1, levers f, pulleys f2, and ropes or chains gg', in combination with the har 7L and its hooks b, for regulating the tension on all the hunks simultaneously, as herein shown and described.

In witness whereof lI, the said SAMUEL BARBOUR, have hereunto 'set my hand and seal the twenty-fifth day of September, in the year of our Lord one thousand eight hnndredand sixty-six.

' sAML. BAnBeUn [Lys] Witnesses:

JAMES BARnoUR, Belfast. WILLIAM SIMMS, Notary Public, Bei'fast. 

